//
// Copyright (c) 2004-2024 Jaroslaw Kowalski <jaak@jkowalski.net>, Kim Christensen, Julian Verdurmen
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// * Neither the name of Jaroslaw Kowalski nor the names of its
//   contributors may be used to endorse or promote products derived from this
//   software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// THE POSSIBILITY OF SUCH DAMAGE.
//

namespace NLog.MessageTemplates
{
    /// <summary>
    /// Combines Literal and Hole
    /// </summary>
    internal
#if !NETFRAMEWORK
        readonly
#endif
        struct LiteralHole
    {
        /// <summary>Literal</summary>
        public
#if !NETFRAMEWORK
            readonly
#endif
            Literal Literal; // Not readonly to avoid struct-copy, and to avoid VerificationException when medium-trust AppDomain
        /// <summary>Hole</summary>
        /// <remarks>Uninitialized when <see cref="MessageTemplates.Literal.Skip"/> = 0.</remarks>
        public
#if !NETFRAMEWORK
            readonly
#endif
            Hole Hole;       // Not readonly to avoid struct-copy, and to avoid VerificationException when medium-trust AppDomain

        public LiteralHole(in Literal literal, in Hole hole)
        {
            Literal = literal;
            Hole = hole;
        }

        public bool MaybePositionalTemplate => Literal.Skip != 0 && Hole.Index != -1 && Hole.CaptureType == CaptureType.Normal;
    }
}
